Book Image

Modern Big Data Processing with Hadoop

By : V Naresh Kumar, Manoj R Patil, Prashant Shindgikar
Book Image

Modern Big Data Processing with Hadoop

By: V Naresh Kumar, Manoj R Patil, Prashant Shindgikar

Overview of this book

The complex structure of data these days requires sophisticated solutions for data transformation, to make the information more accessible to the users.This book empowers you to build such solutions with relative ease with the help of Apache Hadoop, along with a host of other Big Data tools. This book will give you a complete understanding of the data lifecycle management with Hadoop, followed by modeling of structured and unstructured data in Hadoop. It will also show you how to design real-time streaming pipelines by leveraging tools such as Apache Spark, and build efficient enterprise search solutions using Elasticsearch. You will learn to build enterprise-grade analytics solutions on Hadoop, and how to visualize your data using tools such as Apache Superset. This book also covers techniques for deploying your Big Data solutions on the cloud Apache Ambari, as well as expert techniques for managing and administering your Hadoop cluster. By the end of this book, you will have all the knowledge you need to build expert Big Data systems.
Table of Contents (12 chapters)

Exploring HDFS architecture

The HDFS architecture is based on master and slave patterns. NameNode is a master node and all DataNodes are SlaveNodes. Following are some important points to be noted about these two nodes.

Defining NameNode

The NameNode is a master node of all DataNodes in the Hadoop cluster. It stores only the metadata of files and directories stored in the form of a tree. The important point is NameNode never stores any other data other than metadata. NameNode keeps track of all data written to DataNodes in the form of blocks. The default block size is 256 MB (which is configurable). Without the NameNode, the data on the DataNodes filesystem cannot be read. The metadata is stored locally on the NameNode using...